"They could tell that his breathing was shallow. Obviously with the syringes and the condition he was in it was pretty obvious he was suffering from an opioid overdose," Campbell Police Captain Gary Berg said.

Thankfully for the 22-year-old-man suffering from a heroin overdose, Campbell police officers now carry Narcan nasal spray, the brand name for Naloxone, an emergency substance that can prevent a death from an opioid overdose.

They administered it to the man, who in just 10 to 20 seconds became alert.

He was taken to Valley Medical Center, and was released after just a few hours in the hospital.

"We were told from the medical staff had they not given that dose of Narcan that there was a great chance that the man wouldn't have survived," Berg said.All 44 Campbell police officers received training from the Santa Clara County Behavioral Health Department on how to use the Narcan nasal spray.

They're just the second department in the south bay to carry it on patrol.